1582 lines
37 KiB
C
1582 lines
37 KiB
C
/*
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* Written by Julian Elischer (julian@tfs.com)
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* for TRW Financial Systems for use under the MACH(2.5) operating system.
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*
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* TRW Financial Systems, in accordance with their agreement with Carnegie
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* Mellon University, makes this software available to CMU to distribute
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* or use in any manner that they see fit as long as this message is kept with
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* the software. For this reason TFS also grants any other persons or
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* organisations permission to use or modify this software.
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*
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* TFS supplies this software to be publicly redistributed
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* on the understanding that TFS is not responsible for the correct
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* functioning of this software in any circumstances.
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*
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* $Id: bt.c,v 1.9 1996/03/31 18:19:50 gibbs Exp $
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*/
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/*
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* Bulogic/Bustek 32 bit Addressing Mode SCSI driver.
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*
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* NOTE: 1. Some bt5xx card can NOT handle 32 bit addressing mode.
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* 2. OLD bt445s Revision A,B,C,D(nowired) + any firmware version
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* has broken busmaster for handling 32 bit addressing on H/W bus
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* side.
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*
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* 3. Extended probing still needs confirmation from our user base, due
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* to several H/W and firmware dependencies. If you have a problem
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* with extended probing, please contact 'amurai@spec.co.jp'
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*
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* amurai@spec.co.jp 94/6/16
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/sysctl.h>
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#include <machine/clock.h>
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#include <machine/stdarg.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/pmap.h>
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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#include <i386/scsi/btreg.h>
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struct bt_data *btdata[NBT];
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/*
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* I/O Port Interface
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*/
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#define BT_BASE bt->bt_base
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#define BT_CTRL_STAT_PORT (BT_BASE + 0x0) /* control & status */
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/* ReadOps WriteOps */
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#define BT_HRST 0x80 /* Hardware reset */
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#define BT_SRST 0x40 /* Software reset */
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#define BT_IRST 0x20 /* Interrupt reset */
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#define BT_SCRST 0x10 /* SCSI bus reset */
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#define BT_STST 0x80 /* Self test in Progress */
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#define BT_DIAGF 0x40 /* Diagnostic Failure */
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#define BT_INIT 0x20 /* Mbx Init required */
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#define BT_IDLE 0x10 /* Host Adapter Idle */
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#define BT_CDF 0x08 /* cmd/data out port full */
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#define BT_DF 0x04 /* Data in port full */
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#define BT_INVDCMD 0x01 /* Invalid command */
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#define BT_STAT_MASK \
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(BT_STST | BT_DIAGF | BT_INIT | BT_IDLE | BT_CDF | BT_DF | BT_INVDCMD)
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#define BT_CMD_DATA_PORT (BT_BASE + 0x1) /* cmds and datas */
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/* ReadOps WriteOps */
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#define BT_NOP 0x00 /* No operation */
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#define BT_MBX_INIT 0x01 /* Mbx initialization */
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#define BT_START_SCSI 0x02 /* start scsi command */
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#define BT_START_BIOS 0x03 /* start bios command */
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#define BT_INQUIRE 0x04 /* Adapter Inquiry */
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#define BT_MBO_INTR_EN 0x05 /* Enable MBO available intr */
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#define BT_SEL_TIMEOUT_SET 0x06 /* set selection time-out */
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#define BT_BUS_ON_TIME_SET 0x07 /* set bus-on time */
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#define BT_BUS_OFF_TIME_SET 0x08 /* set bus-off time */
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#define BT_SPEED_SET 0x09 /* set transfer speed */
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#define BT_DEV_GET 0x0a /* return installed devices */
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#define BT_CONF_GET 0x0b /* return configuration data */
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#define BT_TARGET_EN 0x0c /* enable target mode */
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#define BT_SETUP_GET 0x0d /* return setup data */
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#define BT_WRITE_CH2 0x1a /* write channel 2 buffer */
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#define BT_READ_CH2 0x1b /* read channel 2 buffer */
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#define BT_WRITE_FIFO 0x1c /* write fifo buffer */
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#define BT_READ_FIFO 0x1d /* read fifo buffer */
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#define BT_ECHO 0x1e /* Echo command data */
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#define BT_MBX_INIT_EXTENDED 0x81 /* Mbx initialization */
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#define BT_INQUIRE_REV_THIRD 0x84 /* Get FirmWare version #3 */
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#define BT_INQUIRE_REV_FOURTH 0x85 /* Get FirmWare version #4 */
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#define BT_INQUIRE_EXTENDED 0x8D /* Adapter Setup Inquiry */
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/* The following commands appeared at FirmWare 3.31 */
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#define BT_ROUND_ROBIN 0x8f /* Enable/Disable round robin */
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#define BT_STRICT_ROUND_ROBIN 0x00 /* Parameter for strict mode */
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#define BT_AGRES_ROUND_ROBIN 0x01 /* Parameter for back compat */
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#define BT_INTR_PORT (BT_BASE + 0x2) /* Intr. stat */
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/* ReadOps WriteOps */
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#define BT_ANY_INTR 0x80 /* Any interrupt */
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#define BT_SCRD 0x08 /* SCSI reset detected */
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#define BT_HACC 0x04 /* Command complete */
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#define BT_MBOA 0x02 /* MBX out empty */
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#define BT_MBIF 0x01 /* MBX in full */
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struct bt_cmd_buf {
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u_char byte[16];
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};
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#define CCB_HASH_SHIFT 9 /* only hash on multiples of 512 */
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#define CCB_HASH(x) ((((long int)(x))>>CCB_HASH_SHIFT) % CCB_HASH_SIZE)
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#define bt_nextmbx( wmb, mbx, mbio ) \
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if ( (wmb) == &((mbx)->mbio[BT_MBX_SIZE - 1 ]) ) \
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(wmb) = &((mbx)->mbio[0]); \
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else \
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(wmb)++;
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struct bt_boardID {
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u_char board_type;
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u_char custom_feture;
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char firm_revision;
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u_char firm_version;
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};
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struct bt_setup {
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u_char sync_neg:1;
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u_char parity:1;
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u_char :6;
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u_char speed;
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u_char bus_on;
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u_char bus_off;
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u_char num_mbx;
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u_char mbx[3]; /* for backwards compatibility */
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struct {
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u_char offset:4;
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u_char period:3;
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u_char valid:1;
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} sync[8];
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u_char disc_sts;
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};
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struct bt_config {
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u_char chan;
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#define BUSDMA 0x00
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#define CHAN0 0x01
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#define CHAN5 0x20
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#define CHAN6 0x40
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#define CHAN7 0x80
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u_char intr;
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#define INT9 0x01
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#define INT10 0x02
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#define INT11 0x04
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#define INT12 0x08
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#define INT14 0x20
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#define INT15 0x40
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u_char scsi_dev:3; /* XXX What about Wide Controllers? */
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u_char :5;
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};
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/*
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* Determine 32bit address/Data firmware functionality from the bus type
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* Note: bt742a/747[s|d]/757/946/445s will return 'E'
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* bt542b/545s/545d will return 'A'
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* 94/05/18 amurai@spec.co.jp
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*/
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struct bt_ext_info {
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u_char bus_type; /* Host adapter bus type */
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#define BT_BUS_TYPE_24bit 'A' /* PC/AT 24 bit address bus type */
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#define BT_BUS_TYPE_32bit 'E' /* EISA/VLB/PCI 32 bit address type */
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#define BT_BUS_TYPE_MCA 'M' /* Micro chanel? */
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u_char bios_addr; /* Bios Address-Not used */
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u_short max_seg; /* Max segment List */
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u_char num_mbx; /* Number of mailbox */
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int32_t mbx_base; /* mailbox base address */
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struct {
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u_char resv1:1; /* ??? */
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u_char force:1; /* ON: force sync */
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u_char maxsync:1; /* ON: 10MB/s , OFF: 5MB/s */
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u_char resv2:2; /* ??? */
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u_char sync:1; /* ON: Sync, OFF: async ONLY!! */
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u_char resv3:2; /* ??? */
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} s;
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u_char firmid[3]; /* Firmware ver. & rev. w/o last char */
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};
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#define BT_GET_BOARD_INFO 0x8b /* Get H/W ID and Revision */
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struct bt_board_info {
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u_char id[4]; /* i.e bt742a -> '7','4','2','A' */
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u_char ver[2]; /* i.e Board Revision 'H' -> 'H', 0x00 */
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};
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#define BT_GET_SYNC_VALUE 0x8c /* Get Synchronous Value */
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struct bt_sync_value {
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u_char value[8]; /* Synchrnous value (value * 10 nsec) */
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};
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#define KVTOPHYS(x) vtophys(x)
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#define PAGESIZ 4096
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#define INVALIDATE_CACHE {asm volatile( ".byte 0x0F ;.byte 0x08" ); }
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/***********debug values *************/
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#define BT_SHOWCCBS 0x01
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#define BT_SHOWINTS 0x02
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#define BT_SHOWCMDS 0x04
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#define BT_SHOWMISC 0x08
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static int bt_debug = 0;
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SYSCTL_INT(_debug, OID_AUTO, bt_debug, CTLFLAG_RW, &bt_debug, 0, "");
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static u_int32_t bt_adapter_info __P((int unit));
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static struct bt_ccb *
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bt_ccb_phys_kv __P((struct bt_data *bt, physaddr ccb_phys));
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static int bt_cmd __P((struct bt_data *bt, int icnt, int ocnt, int wait,
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u_char *retval, u_char opcode, ...));
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static void bt_done __P((struct bt_data *bt, struct bt_ccb *ccb));
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static void bt_free_ccb __P((struct bt_data *bt, struct bt_ccb *ccb,
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int flags));
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static struct bt_ccb *
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bt_get_ccb __P((struct bt_data *bt, int flags));
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static void bt_inquire_setup_information __P((struct bt_data *bt,
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struct bt_ext_info *info));
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static void btminphys __P((struct buf *bp));
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static int bt_poll __P((struct bt_data *bt, struct scsi_xfer *xs,
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struct bt_ccb *ccb));
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#ifdef UTEST
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static void bt_print_active_ccbs __P((int unit));
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static void bt_print_ccb __P((struct bt_ccb *ccb));
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#endif
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static int32_t bt_scsi_cmd __P((struct scsi_xfer *xs));
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static BT_MBO * bt_send_mbo __P((struct bt_data *bt, int flags, int cmd,
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struct bt_ccb *ccb));
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static timeout_t
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bt_timeout;
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u_long bt_unit = 0;
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static int btprobing = 1;
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/*
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* XXX
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* Do our own re-probe protection until a configuration
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* manager can do it for us. This ensures that we don't
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* reprobe a card already found by the EISA or PCI probes.
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*/
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struct bt_found
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{
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u_long port;
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char probed;
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};
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static struct bt_found found[] =
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{
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{ 0x330, 0 },
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{ 0x334, 0 },
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{ 0x230, 0 },
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{ 0x234, 0 },
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{ 0x130, 0 },
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{ 0x134, 0 }
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};
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static struct scsi_adapter bt_switch =
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{
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bt_scsi_cmd,
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btminphys,
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0,
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0,
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bt_adapter_info,
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"bt",
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{ 0, 0 }
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};
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/* the below structure is so we have a default dev struct for out link struct */
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static struct scsi_device bt_dev =
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{
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NULL, /* Use default error handler */
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NULL, /* have a queue, served by this */
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NULL, /* have no async handler */
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NULL, /* Use default 'done' routine */
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"bt",
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0,
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{ 0, 0 }
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};
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#define BT_RESET_TIMEOUT 1000
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/*
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* bt_cmd(bt, icnt, ocnt, wait, retval, opcode, ...)
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*
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* Activate Adapter command
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* icnt: number of args (outbound bytes written after opcode)
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* ocnt: number of expected returned bytes
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* wait: number of seconds to wait for response
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* retval: buffer where to place returned bytes
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* opcode: opcode BT_NOP, BT_MBX_INIT, BT_START_SCSI ...
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* ...: parameters to the command specified by opcode
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*
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* Performs an adapter command through the ports. Not to be confused with a
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* scsi command, which is read in via the dma; one of the adapter commands
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* tells it to read in a scsi command.
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*/
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static int
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#ifdef __STDC__
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bt_cmd(struct bt_data *bt, int icnt, int ocnt, int wait, u_char *retval,
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u_char opcode, ...)
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#else
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bt_cmd(bt, icnt, ocnt, wait, retval, opcode, va_alist)
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struct bt_data *bt;
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int icnt, ocnt, wait;
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u_char *retval;
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u_char opcode;
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va_dcl
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#endif
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{
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va_list ap;
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u_char data;
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u_char oc;
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register i;
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int sts;
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/*
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* multiply the wait argument by a big constant
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* zero defaults to 1
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*/
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if (wait)
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wait *= 100000;
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else
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wait = 100000;
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/*
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* Wait for the adapter to go idle, unless it's one of
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* the commands which don't need this
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*/
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if (opcode != BT_MBX_INIT && opcode != BT_START_SCSI) {
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i = 100000; /* 1 sec? */
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while (--i) {
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sts = inb(BT_CTRL_STAT_PORT);
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if (sts & BT_IDLE) {
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break;
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}
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DELAY(10);
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}
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if (i == 0) {
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if(!btprobing)
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printf("bt%d: bt_cmd, host not idle(0x%x)\n",
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bt->unit, sts);
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return (ENXIO);
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}
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}
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/*
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* Now that it is idle, if we expect output, preflush the
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* queue feeding to us.
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*/
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if (ocnt) {
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while ((inb(BT_CTRL_STAT_PORT)) & BT_DF)
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inb(BT_CMD_DATA_PORT);
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}
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/*
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* Output the command and the number of arguments given
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* for each byte, first check the port is empty.
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*/
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va_start(ap, opcode);
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/* test icnt >= 0, to include the command in data sent */
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for (data = opcode; icnt >= 0; icnt--, data = (u_char)va_arg(ap, int)) {
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sts = inb(BT_CTRL_STAT_PORT);
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for (i = wait; i; i--) {
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sts = inb(BT_CTRL_STAT_PORT);
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if (!(sts & BT_CDF))
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break;
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DELAY(10);
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}
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if (i == 0) {
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if(!btprobing)
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printf("bt%d: bt_cmd, cmd/data port full\n",
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bt->unit);
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outb(BT_CTRL_STAT_PORT, BT_SRST);
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return (ENXIO);
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}
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outb(BT_CMD_DATA_PORT, data);
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}
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va_end(ap);
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/*
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* If we expect input, loop that many times, each time,
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* looking for the data register to have valid data
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*/
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while (ocnt--) {
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sts = inb(BT_CTRL_STAT_PORT);
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for (i = wait; i; i--) {
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sts = inb(BT_CTRL_STAT_PORT);
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if (sts & BT_DF)
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break;
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DELAY(10);
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}
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if (i == 0) {
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if(!btprobing)
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printf("bt%d: bt_cmd, cmd/data port empty %d\n",
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bt->unit, ocnt);
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return (ENXIO);
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}
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oc = inb(BT_CMD_DATA_PORT);
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if (retval)
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*retval++ = oc;
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}
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/*
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* Wait for the board to report a finised instruction
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*/
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i = 100000; /* 1 sec? */
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while (--i) {
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sts = inb(BT_INTR_PORT);
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if (sts & BT_HACC) {
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break;
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}
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DELAY(10);
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}
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if (i == 0) {
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if(!btprobing)
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printf("bt%d: bt_cmd, host not finished(0x%x)\n",
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bt->unit, sts);
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return (ENXIO);
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}
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outb(BT_CTRL_STAT_PORT, BT_IRST);
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return (0);
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}
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struct bt_data *
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bt_alloc(unit, iobase)
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int unit;
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u_long iobase;
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{
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struct bt_data *bt;
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int i;
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if (unit >= NBT) {
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printf("bt: unit number (%d) too high\n", unit);
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return NULL;
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}
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|
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/*
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* Allocate a storage area for us
|
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*/
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if (btdata[unit]) {
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printf("bt%d: memory already allocated\n", unit);
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return NULL;
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}
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/*
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* Ensure that we haven't already been probed
|
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*/
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for (i=0; i < sizeof(found)/sizeof(struct bt_found); i++) {
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if (found[i].port == iobase) {
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if (found[i].probed)
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return NULL;
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else {
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found[i].probed = 1;
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break;
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}
|
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}
|
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}
|
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|
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bt = malloc(sizeof(struct bt_data), M_DEVBUF, M_NOWAIT);
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if (!bt) {
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printf("bt%d: cannot malloc!\n", unit);
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return NULL;
|
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}
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bzero(bt, sizeof(struct bt_data));
|
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btdata[unit] = bt;
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bt->unit = unit;
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bt->bt_base = iobase;
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return(bt);
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}
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|
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void
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bt_free(bt)
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struct bt_data *bt;
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{
|
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btdata[bt->unit] = NULL;
|
|
free(bt, M_DEVBUF);
|
|
return;
|
|
}
|
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|
|
|
|
int
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bt_attach(bt)
|
|
struct bt_data *bt;
|
|
{
|
|
struct scsibus_data *scbus;
|
|
|
|
btprobing = 0;
|
|
/*
|
|
* fill in the prototype scsi_link.
|
|
*/
|
|
bt->sc_link.adapter_unit = bt->unit;
|
|
bt->sc_link.adapter_targ = bt->bt_scsi_dev;
|
|
bt->sc_link.adapter_softc = bt;
|
|
bt->sc_link.adapter = &bt_switch;
|
|
bt->sc_link.device = &bt_dev;
|
|
bt->sc_link.flags = bt->bt_bounce ? SDEV_BOUNCE : 0;
|
|
|
|
/*
|
|
* Prepare the scsibus_data area for the upperlevel
|
|
* scsi code.
|
|
*/
|
|
scbus = scsi_alloc_bus();
|
|
/* XXX scbus->magtarg should be adjusted for Wide cards */
|
|
if(!scbus)
|
|
return 0;
|
|
scbus->adapter_link = &bt->sc_link;
|
|
|
|
/*
|
|
* ask the adapter what subunits are present
|
|
*/
|
|
scsi_attachdevs(scbus);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Return some information to the caller about the adapter and its
|
|
* capabilities.
|
|
*/
|
|
static u_int32_t
|
|
bt_adapter_info(unit)
|
|
int unit;
|
|
{
|
|
return (2); /* 2 outstanding requests at a time per device */
|
|
}
|
|
|
|
/*
|
|
* Catch an interrupt from the adaptor
|
|
*/
|
|
void
|
|
bt_intr(arg)
|
|
void *arg;
|
|
{
|
|
BT_MBI *wmbi;
|
|
struct bt_mbx *wmbx;
|
|
struct bt_ccb *ccb;
|
|
unsigned char stat;
|
|
int i, wait;
|
|
int found = 0;
|
|
struct bt_data *bt;
|
|
|
|
bt = (struct bt_data *)arg;
|
|
|
|
#ifdef UTEST
|
|
printf("bt_intr ");
|
|
#endif
|
|
/*
|
|
* First acknowlege the interrupt, Then if it's
|
|
* not telling about a completed operation
|
|
* just return.
|
|
*/
|
|
stat = inb(BT_INTR_PORT);
|
|
if((stat & BT_STAT_MASK) == 0) {
|
|
/* Shared interrupt */
|
|
return;
|
|
}
|
|
|
|
/* Mail Box out empty ? */
|
|
if (stat & BT_MBOA) {
|
|
printf("bt%d: Available Free mbo post\n", bt->unit);
|
|
/* Disable MBO available interrupt */
|
|
outb(BT_CMD_DATA_PORT, BT_MBO_INTR_EN);
|
|
wait = 100000; /* 1 sec enough? */
|
|
for (i = wait; i; i--) {
|
|
if (!(inb(BT_CTRL_STAT_PORT) & BT_CDF))
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (i == 0) {
|
|
printf("bt%d: bt_intr, cmd/data port full\n", bt->unit);
|
|
outb(BT_CTRL_STAT_PORT, BT_SRST);
|
|
return;
|
|
}
|
|
outb(BT_CMD_DATA_PORT, 0x00); /* Disable */
|
|
wakeup((caddr_t)&bt->bt_mbx);
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
return;
|
|
}
|
|
if (!(stat & BT_MBIF)) {
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
return;
|
|
}
|
|
/*
|
|
* If it IS then process the competed operation
|
|
*/
|
|
wmbx = &bt->bt_mbx;
|
|
wmbi = wmbx->tmbi;
|
|
AGAIN:
|
|
while (wmbi->stat != BT_MBI_FREE) {
|
|
ccb = bt_ccb_phys_kv(bt, (wmbi->ccb_addr));
|
|
if (!ccb) {
|
|
wmbi->stat = BT_MBI_FREE;
|
|
printf("bt: BAD CCB ADDR!\n");
|
|
continue;
|
|
}
|
|
found++;
|
|
if ((stat = wmbi->stat) != BT_MBI_OK) {
|
|
switch (stat) {
|
|
case BT_MBI_ABORT:
|
|
#ifdef UTEST
|
|
if (bt_debug & BT_SHOWMISC)
|
|
printf("abort ");
|
|
#endif
|
|
ccb->host_stat = BT_ABORTED;
|
|
break;
|
|
|
|
case BT_MBI_UNKNOWN:
|
|
ccb = (struct bt_ccb *) 0;
|
|
#ifdef UTEST
|
|
if (bt_debug & BT_SHOWMISC)
|
|
printf("unknown ccb for abort");
|
|
#endif
|
|
break;
|
|
|
|
case BT_MBI_ERROR:
|
|
break;
|
|
|
|
default:
|
|
panic("Impossible mbxi status");
|
|
|
|
}
|
|
#ifdef UTEST
|
|
if ((bt_debug & BT_SHOWCMDS) && ccb) {
|
|
u_char *cp;
|
|
cp = ccb->scsi_cmd;
|
|
printf("op=%x %x %x %x %x %x\n",
|
|
cp[0], cp[1], cp[2],
|
|
cp[3], cp[4], cp[5]);
|
|
printf("stat %x for mbi addr = 0x%08x\n"
|
|
,wmbi->stat, wmbi);
|
|
printf("addr = 0x%x\n", ccb);
|
|
}
|
|
#endif
|
|
}
|
|
wmbi->stat = BT_MBI_FREE;
|
|
if (ccb) {
|
|
untimeout(bt_timeout, (caddr_t)ccb);
|
|
bt_done(bt, ccb);
|
|
}
|
|
/* Set the IN mail Box pointer for next */ bt_nextmbx(wmbi, wmbx, mbi);
|
|
}
|
|
if (!found) {
|
|
for (i = 0; i < BT_MBX_SIZE; i++) {
|
|
if (wmbi->stat != BT_MBI_FREE) {
|
|
found++;
|
|
break;
|
|
}
|
|
bt_nextmbx(wmbi, wmbx, mbi);
|
|
}
|
|
if (!found) {
|
|
#ifdef DEBUG
|
|
printf("bt%d: mbi at 0x%08x should be found, stat=%02x..resync\n",
|
|
bt->unit, wmbi, stat);
|
|
#endif
|
|
} else {
|
|
found = 0;
|
|
goto AGAIN;
|
|
}
|
|
}
|
|
wmbx->tmbi = wmbi;
|
|
outb(BT_CTRL_STAT_PORT, BT_IRST);
|
|
}
|
|
|
|
/*
|
|
* A ccb is put onto the free list.
|
|
*/
|
|
static void
|
|
bt_free_ccb(bt, ccb, flags)
|
|
struct bt_data *bt;
|
|
struct bt_ccb *ccb;
|
|
int flags;
|
|
{
|
|
unsigned int opri;
|
|
|
|
opri = splbio();
|
|
|
|
ccb->next = bt->bt_ccb_free;
|
|
bt->bt_ccb_free = ccb;
|
|
ccb->flags = CCB_FREE;
|
|
/*
|
|
* If there were none, wake anybody waiting for one to come free,
|
|
* starting with queued entries.
|
|
*/
|
|
if (!ccb->next) {
|
|
wakeup((caddr_t)&bt->bt_ccb_free);
|
|
}
|
|
|
|
splx(opri);
|
|
}
|
|
|
|
/*
|
|
* Get a free ccb
|
|
*
|
|
* If there are none, see if we can allocate a new one. If so, put it in
|
|
* the hash table too otherwise either return an error or sleep.
|
|
*/
|
|
static struct bt_ccb *
|
|
bt_get_ccb(bt, flags)
|
|
struct bt_data *bt;
|
|
int flags;
|
|
{
|
|
unsigned opri;
|
|
struct bt_ccb *ccbp;
|
|
int hashnum;
|
|
|
|
opri = splbio();
|
|
/*
|
|
* If we can and have to, sleep waiting for one to come free
|
|
* but only if we can't allocate a new one.
|
|
*/
|
|
while (!(ccbp = bt->bt_ccb_free)) {
|
|
if (bt->numccbs < BT_CCB_MAX) {
|
|
if (ccbp = (struct bt_ccb *) malloc(sizeof(struct bt_ccb),
|
|
M_TEMP,
|
|
M_NOWAIT)) {
|
|
bzero(ccbp, sizeof(struct bt_ccb));
|
|
bt->numccbs++;
|
|
ccbp->flags = CCB_ACTIVE;
|
|
/*
|
|
* put in the phystokv hash table
|
|
* Never gets taken out.
|
|
*/
|
|
ccbp->hashkey = KVTOPHYS(ccbp);
|
|
hashnum = CCB_HASH(ccbp->hashkey);
|
|
ccbp->nexthash = bt->ccbhash[hashnum];
|
|
bt->ccbhash[hashnum] = ccbp;
|
|
} else {
|
|
printf("bt%d: Can't malloc CCB\n", bt->unit);
|
|
}
|
|
goto gottit;
|
|
} else {
|
|
if (!(flags & SCSI_NOSLEEP)) {
|
|
tsleep((caddr_t)&bt->bt_ccb_free, PRIBIO,
|
|
"btccb", 0);
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (ccbp) {
|
|
/* Get CCB from from free list */
|
|
bt->bt_ccb_free = ccbp->next;
|
|
ccbp->flags = CCB_ACTIVE;
|
|
}
|
|
gottit:
|
|
splx(opri);
|
|
|
|
return (ccbp);
|
|
}
|
|
|
|
/*
|
|
* given a physical address, find the ccb that
|
|
* it corresponds to:
|
|
*/
|
|
static struct bt_ccb *
|
|
bt_ccb_phys_kv(bt, ccb_phys)
|
|
struct bt_data *bt;
|
|
physaddr ccb_phys;
|
|
{
|
|
int hashnum = CCB_HASH(ccb_phys);
|
|
struct bt_ccb *ccbp = bt->ccbhash[hashnum];
|
|
|
|
while (ccbp) {
|
|
if (ccbp->hashkey == ccb_phys)
|
|
break;
|
|
ccbp = ccbp->nexthash;
|
|
}
|
|
return ccbp;
|
|
}
|
|
|
|
/*
|
|
* Get a MBO and then Send it
|
|
*/
|
|
static BT_MBO *
|
|
bt_send_mbo(bt, flags, cmd, ccb)
|
|
struct bt_data *bt;
|
|
int flags;
|
|
int cmd;
|
|
struct bt_ccb *ccb;
|
|
{
|
|
unsigned opri;
|
|
BT_MBO *wmbo; /* Mail Box Out pointer */
|
|
struct bt_mbx *wmbx; /* Mail Box pointer specified unit */
|
|
int i, wait;
|
|
|
|
wmbx = &bt->bt_mbx;
|
|
|
|
opri = splbio();
|
|
|
|
/* Get the Target OUT mail Box pointer and move to Next */
|
|
wmbo = wmbx->tmbo;
|
|
wmbx->tmbo = (wmbo == &(wmbx->mbo[BT_MBX_SIZE - 1]) ?
|
|
&(wmbx->mbo[0]) : wmbo + 1);
|
|
|
|
/*
|
|
* Check the outmail box is free or not.
|
|
* Note: Under the normal operation, it shuld NOT happen to wait.
|
|
*/
|
|
while (wmbo->cmd != BT_MBO_FREE) {
|
|
wait = 100000; /* 1 sec enough? */
|
|
/* Enable MBO available interrupt */
|
|
outb(BT_CMD_DATA_PORT, BT_MBO_INTR_EN);
|
|
for (i = wait; i; i--) {
|
|
if (!(inb(BT_CTRL_STAT_PORT) & BT_CDF))
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (i == 0) {
|
|
printf("bt%d: bt_send_mbo, cmd/data port full\n", bt->unit);
|
|
outb(BT_CTRL_STAT_PORT, BT_SRST);
|
|
return ((BT_MBO *) 0);
|
|
}
|
|
outb(BT_CMD_DATA_PORT, 0x01); /* Enable */
|
|
tsleep((caddr_t)wmbx, PRIBIO, "btsend", 0);
|
|
/* XXX */ /*can't do this! */
|
|
/* May be servicing an int */
|
|
}
|
|
/* Link CCB to the Mail Box */
|
|
wmbo->ccb_addr = KVTOPHYS(ccb);
|
|
ccb->mbx = wmbo;
|
|
wmbo->cmd = cmd;
|
|
|
|
/* Send it! */
|
|
outb(BT_CMD_DATA_PORT, BT_START_SCSI);
|
|
|
|
splx(opri);
|
|
|
|
return (wmbo);
|
|
}
|
|
|
|
/*
|
|
* We have a ccb which has been processed by the
|
|
* adaptor, now we look to see how the operation
|
|
* went. Wake up the owner if waiting
|
|
*/
|
|
static void
|
|
bt_done(bt, ccb)
|
|
struct bt_data *bt;
|
|
struct bt_ccb *ccb;
|
|
{
|
|
struct scsi_sense_data *s1, *s2;
|
|
struct scsi_xfer *xs = ccb->xfer;
|
|
|
|
SC_DEBUG(xs->sc_link, SDEV_DB2, ("bt_done\n"));
|
|
/*
|
|
* Otherwise, put the results of the operation
|
|
* into the xfer and call whoever started it
|
|
*/
|
|
if ((ccb->host_stat != BT_OK || ccb->target_stat != SCSI_OK)
|
|
&& (!(xs->flags & SCSI_ERR_OK))) {
|
|
|
|
s1 = &(ccb->scsi_sense);
|
|
s2 = &(xs->sense);
|
|
|
|
if (ccb->host_stat) {
|
|
switch (ccb->host_stat) {
|
|
case BT_ABORTED: /* No response */
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
|
("timeout reported back\n"));
|
|
xs->error = XS_TIMEOUT;
|
|
break;
|
|
case BT_SEL_TIMEOUT:
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
|
("selection timeout reported back\n"));
|
|
xs->error = XS_SELTIMEOUT;
|
|
break;
|
|
default: /* Other scsi protocol messes */
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
|
("unexpected host_stat: %x\n",
|
|
ccb->host_stat));
|
|
}
|
|
} else {
|
|
switch (ccb->target_stat) {
|
|
case 0x02:
|
|
*s2 = *s1;
|
|
xs->error = XS_SENSE;
|
|
break;
|
|
case 0x08:
|
|
xs->error = XS_BUSY;
|
|
break;
|
|
default:
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
|
("unexpected target_stat: %x\n",
|
|
ccb->target_stat));
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
}
|
|
}
|
|
} else { /* All went correctly OR errors expected */
|
|
xs->resid = 0;
|
|
}
|
|
xs->flags |= ITSDONE;
|
|
bt_free_ccb(bt, ccb, xs->flags);
|
|
scsi_done(xs);
|
|
}
|
|
|
|
/*
|
|
* Start the board, ready for normal operation
|
|
*/
|
|
int
|
|
bt_init(bt)
|
|
struct bt_data* bt;
|
|
{
|
|
unsigned char ad[4];
|
|
volatile int i, sts;
|
|
struct bt_config conf;
|
|
struct bt_ext_info info;
|
|
struct bt_board_info binfo;
|
|
|
|
/*
|
|
* reset board, If it doesn't respond, assume
|
|
* that it's not there.. good for the probe
|
|
*/
|
|
|
|
outb(BT_CTRL_STAT_PORT, BT_HRST | BT_SRST);
|
|
|
|
DELAY(10000);
|
|
|
|
for (i = BT_RESET_TIMEOUT; i; i--) {
|
|
sts = inb(BT_CTRL_STAT_PORT);
|
|
if (sts == (BT_IDLE | BT_INIT))
|
|
break;
|
|
DELAY(1000);
|
|
}
|
|
if (i == 0) {
|
|
#ifdef UTEST
|
|
printf("bt_init: No answer from board\n");
|
|
#endif
|
|
return (ENXIO);
|
|
}
|
|
|
|
DELAY(10000);
|
|
|
|
/*
|
|
* Displaying Board ID and Hardware Revision
|
|
* 94/05/18 amurai@spec.co.jp
|
|
*/
|
|
i = bt_cmd(bt, 1, sizeof(binfo),0,
|
|
(u_char *)&binfo,BT_GET_BOARD_INFO,sizeof(binfo));
|
|
if(i)
|
|
return i;
|
|
printf("bt%d: Bt%c%c%c%c/%c%d-", bt->unit,
|
|
binfo.id[0],
|
|
binfo.id[1],
|
|
binfo.id[2],
|
|
binfo.id[3],
|
|
binfo.ver[0],
|
|
(unsigned) binfo.ver[1]
|
|
);
|
|
|
|
/*
|
|
* Make sure board has a capability of 32bit addressing.
|
|
* and Firmware also need a capability of 32bit addressing pointer
|
|
* in Extended mailbox and ccb structure.
|
|
* 94/05/18 amurai@spec.co.jp
|
|
*/
|
|
bt_cmd(bt, 1, sizeof(info),0, (u_char *)&info, BT_INQUIRE_EXTENDED,
|
|
sizeof(info));
|
|
switch (info.bus_type) {
|
|
case BT_BUS_TYPE_24bit: /* PC/AT 24 bit address bus */
|
|
printf("ISA(24bit) bus\n");
|
|
break;
|
|
case BT_BUS_TYPE_32bit: /* EISA/VLB/PCI 32 bit bus */
|
|
printf("(32bit) bus\n");
|
|
break;
|
|
case BT_BUS_TYPE_MCA: /* forget it right now */
|
|
printf("MCA bus architecture...");
|
|
printf("giving up\n");
|
|
return (ENXIO);
|
|
break;
|
|
default:
|
|
printf("Unknown state...");
|
|
printf("giving up\n");
|
|
return (ENXIO);
|
|
break;
|
|
}
|
|
|
|
if ( binfo.id[0] == '4' && binfo.id[1] == '4' && binfo.id[2] == '5' &&
|
|
binfo.id[3] == 'S' ) {
|
|
printf("bt%d: Your card cannot DMA above 16MB boundary. Bounce buffering enabled.\n", bt->unit);
|
|
bt->bt_bounce++;
|
|
} else if ( binfo.id[0] == '5' ) {
|
|
printf("bt%d: This driver is designed for using 32 bit addressing\n"
|
|
"bt%d: mode firmware and EISA/PCI/VLB bus architectures\n"
|
|
"bt%d: Bounce-buffering will be used (and is necessary)\n"
|
|
"bt%d: if you have more than 16MBytes memory.\n",
|
|
bt->unit,
|
|
bt->unit,
|
|
bt->unit,
|
|
bt->unit);
|
|
bt->bt_bounce++;
|
|
} else if ( info.bus_type == BT_BUS_TYPE_24bit ) {
|
|
printf("bt%d: Your board should report a 32bit bus architecture type..\n"
|
|
"bt%d: The firmware on your board may have a problem with over\n"
|
|
"bt%d: 16MBytes memory handling with this driver.\n",
|
|
bt->unit,
|
|
bt->unit,
|
|
bt->unit);
|
|
bt->bt_bounce++;
|
|
}
|
|
|
|
/*
|
|
* Assume we have a board at this stage
|
|
* setup dma channel from jumpers and save int
|
|
* level
|
|
*/
|
|
printf("bt%d: reading board settings, ", bt->unit);
|
|
|
|
bt_cmd(bt, 0, sizeof(conf), 0, (u_char *)&conf, BT_CONF_GET);
|
|
switch (conf.chan) {
|
|
case BUSDMA:
|
|
bt->bt_dma = -1;
|
|
break;
|
|
case CHAN0:
|
|
outb(0x0b, 0x0c);
|
|
outb(0x0a, 0x00);
|
|
bt->bt_dma = 0;
|
|
break;
|
|
case CHAN5:
|
|
outb(0xd6, 0xc1);
|
|
outb(0xd4, 0x01);
|
|
bt->bt_dma = 5;
|
|
break;
|
|
case CHAN6:
|
|
outb(0xd6, 0xc2);
|
|
outb(0xd4, 0x02);
|
|
bt->bt_dma = 6;
|
|
break;
|
|
case CHAN7:
|
|
outb(0xd6, 0xc3);
|
|
outb(0xd4, 0x03);
|
|
bt->bt_dma = 7;
|
|
break;
|
|
default:
|
|
printf("illegal dma setting %x\n", conf.chan);
|
|
return (EIO);
|
|
}
|
|
if (bt->bt_dma == -1)
|
|
printf("busmastering, ");
|
|
else
|
|
printf("dma=%d, ", bt->bt_dma);
|
|
|
|
switch (conf.intr) {
|
|
case INT9:
|
|
bt->bt_int = 9;
|
|
break;
|
|
case INT10:
|
|
bt->bt_int = 10;
|
|
break;
|
|
case INT11:
|
|
bt->bt_int = 11;
|
|
break;
|
|
case INT12:
|
|
bt->bt_int = 12;
|
|
break;
|
|
case INT14:
|
|
bt->bt_int = 14;
|
|
break;
|
|
case INT15:
|
|
bt->bt_int = 15;
|
|
break;
|
|
default:
|
|
printf("illegal int setting\n");
|
|
return (EIO);
|
|
}
|
|
printf("int=%d\n", bt->bt_int);
|
|
|
|
/* who are we on the scsi bus */
|
|
bt->bt_scsi_dev = conf.scsi_dev;
|
|
/*
|
|
* Initialize mail box
|
|
*/
|
|
*((physaddr *) ad) = KVTOPHYS(&bt->bt_mbx);
|
|
bt_cmd(bt, 5, 0, 0, 0, BT_MBX_INIT_EXTENDED
|
|
,BT_MBX_SIZE
|
|
,ad[0]
|
|
,ad[1]
|
|
,ad[2]
|
|
,ad[3]);
|
|
|
|
/*
|
|
* Set Pointer chain null for just in case
|
|
* Link the ccb's into a free-list W/O mbox
|
|
* Initialize mail box status to free
|
|
*/
|
|
if (bt->bt_ccb_free != (struct bt_ccb *) 0) {
|
|
printf("bt%d: bt_ccb_free is NOT initialized but init here\n",
|
|
bt->unit);
|
|
bt->bt_ccb_free = (struct bt_ccb *) 0;
|
|
}
|
|
for (i = 0; i < BT_MBX_SIZE; i++) {
|
|
bt->bt_mbx.mbo[i].cmd = BT_MBO_FREE;
|
|
bt->bt_mbx.mbi[i].stat = BT_MBI_FREE;
|
|
}
|
|
/*
|
|
* Set up initial mail box for round-robin operation.
|
|
*/
|
|
bt->bt_mbx.tmbo = &bt->bt_mbx.mbo[0];
|
|
bt->bt_mbx.tmbi = &bt->bt_mbx.mbi[0];
|
|
bt_inquire_setup_information(bt, &info);
|
|
|
|
|
|
/*
|
|
* Note that we are going and return (to probe)
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
bt_inquire_setup_information(bt, info)
|
|
struct bt_data* bt;
|
|
struct bt_ext_info *info;
|
|
{
|
|
struct bt_setup setup;
|
|
struct bt_sync_value sync;
|
|
char dummy[8];
|
|
char sub_ver[3];
|
|
struct bt_boardID bID;
|
|
int i;
|
|
|
|
/* Inquire Installed Devices */
|
|
bzero( &dummy[0], sizeof(dummy) );
|
|
bt_cmd(bt, 0, sizeof(dummy), 100, &dummy[0], BT_DEV_GET);
|
|
|
|
/*
|
|
* If board has a capbility of Syncrhonouse mode,
|
|
* Get a SCSI Synchronous value
|
|
*/
|
|
|
|
if (info->s.force) { /* Assume fast sync capability */
|
|
info->s.sync = 1; /* It's appear at 4.25? version */
|
|
info->s.maxsync = 1;
|
|
}
|
|
if ( info->s.sync ) {
|
|
bt_cmd(bt, 1, sizeof(sync), 100,
|
|
(u_char *)&sync,BT_GET_SYNC_VALUE,sizeof(sync));
|
|
}
|
|
|
|
/*
|
|
* Inquire Board ID to board for firmware version
|
|
*/
|
|
bt_cmd(bt, 0, sizeof(bID), 0, (u_char *)&bID, BT_INQUIRE);
|
|
bt_cmd(bt, 0, 1, 0, &sub_ver[0], BT_INQUIRE_REV_THIRD );
|
|
i = ((int)(bID.firm_revision-'0')) * 10 + (int)(bID.firm_version-'0');
|
|
if ( i >= 33 ) {
|
|
bt_cmd(bt, 0, 1, 0, &sub_ver[1], BT_INQUIRE_REV_FOURTH );
|
|
} else {
|
|
/*
|
|
* Below rev 3.3 firmware has a problem for issuing
|
|
* the BT_INQUIRE_REV_FOURTH command.
|
|
*/
|
|
sub_ver[1]='\0';
|
|
}
|
|
sub_ver[2]='\0';
|
|
if (sub_ver[1]==' ')
|
|
sub_ver[1]='\0';
|
|
printf("bt%d: version %c.%c%s, ",
|
|
bt->unit, bID.firm_revision, bID.firm_version, sub_ver );
|
|
|
|
/*
|
|
* Obtain setup information from board.
|
|
*/
|
|
bt_cmd(bt, 1, sizeof(setup), 0, (u_char *)&setup, BT_SETUP_GET,
|
|
sizeof(setup));
|
|
|
|
if (setup.sync_neg && info->s.sync ) {
|
|
if ( info->s.maxsync ) {
|
|
printf("fast sync, "); /* Max 10MB/s */
|
|
} else {
|
|
printf("sync, "); /* Max 5MB/s */
|
|
}
|
|
} else {
|
|
if ( info->s.sync ) {
|
|
printf("async, "); /* Never try by board */
|
|
} else {
|
|
printf("async only, "); /* Doesn't has a capability on board */
|
|
}
|
|
}
|
|
if (setup.parity) {
|
|
printf("parity, ");
|
|
} else {
|
|
printf("no parity, ");
|
|
}
|
|
printf("%d mbxs, %d ccbs\n", setup.num_mbx, BT_CCB_MAX);
|
|
|
|
/*
|
|
* Displayi SCSI negotiation value by each target.
|
|
* amurai@spec.co.jp
|
|
*/
|
|
for (i = 0; i < 8; i++) {
|
|
if (!setup.sync[i].valid )
|
|
continue;
|
|
if ( (!setup.sync[i].offset && !setup.sync[i].period)
|
|
|| !info->s.sync ) {
|
|
printf("bt%d: targ %d async\n", bt->unit, i);
|
|
} else {
|
|
printf("bt%d: targ %d sync rate=%2d.%02dMB/s(%dns), offset=%02d\n",
|
|
bt->unit, i,
|
|
100 / sync.value[i],
|
|
(100 % sync.value[i]) * 100 / sync.value[i],
|
|
sync.value[i] * 10,
|
|
setup.sync[i].offset );
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Enable round-robin scheme - appeared at firmware rev. 3.31
|
|
* Below rev 3.XX firmware has a problem for issuing
|
|
* BT_ROUND_ROBIN command amurai@spec.co.jp
|
|
*/
|
|
if ( bID.firm_revision >= '3' ) {
|
|
printf("bt%d: Using Strict Round robin scheme\n", bt->unit);
|
|
bt_cmd(bt, 1, 0, 0, 0, BT_ROUND_ROBIN, BT_STRICT_ROUND_ROBIN);
|
|
} else {
|
|
printf("bt%d: Not using Strict Round robin scheme\n", bt->unit);
|
|
}
|
|
|
|
}
|
|
|
|
#ifndef min
|
|
#define min(x,y) (x < y ? x : y)
|
|
#endif /* min */
|
|
|
|
static void
|
|
btminphys(bp)
|
|
struct buf *bp;
|
|
{
|
|
if (bp->b_bcount > ((BT_NSEG - 1) * PAGESIZ)) {
|
|
bp->b_bcount = ((BT_NSEG - 1) * PAGESIZ);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* start a scsi operation given the command and the data address. Also needs
|
|
* the unit, target and lu.
|
|
*/
|
|
static int32_t
|
|
bt_scsi_cmd(xs)
|
|
struct scsi_xfer *xs;
|
|
{
|
|
struct bt_ccb *ccb;
|
|
struct bt_scat_gath *sg;
|
|
int seg; /* scatter gather seg being worked on */
|
|
int thiskv;
|
|
physaddr thisphys, nextphys;
|
|
int bytes_this_seg, bytes_this_page, datalen, flags;
|
|
struct bt_data *bt;
|
|
|
|
bt = (struct bt_data *)xs->sc_link->adapter_softc;
|
|
|
|
SC_DEBUG(xs->sc_link, SDEV_DB2, ("bt_scsi_cmd\n"));
|
|
/*
|
|
* get a ccb (mbox-out) to use. If the transfer
|
|
* is from a buf (possibly from interrupt time)
|
|
* then we can't allow it to sleep
|
|
*/
|
|
flags = xs->flags;
|
|
if (flags & ITSDONE) {
|
|
printf("bt%d: Already done?\n", bt->unit);
|
|
xs->flags &= ~ITSDONE;
|
|
}
|
|
if (!(flags & INUSE)) {
|
|
printf("bt%d: Not in use?\n", bt->unit);
|
|
xs->flags |= INUSE;
|
|
}
|
|
if (!(ccb = bt_get_ccb(bt, flags))) {
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return (TRY_AGAIN_LATER);
|
|
}
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3,
|
|
("start ccb(%p)\n", ccb));
|
|
/*
|
|
* Put all the arguments for the xfer in the ccb
|
|
*/
|
|
ccb->xfer = xs;
|
|
if (flags & SCSI_RESET) {
|
|
ccb->opcode = BT_RESET_CCB;
|
|
} else {
|
|
/* can't use S/G if zero length */
|
|
ccb->opcode = (xs->datalen ?
|
|
BT_INIT_SCAT_GATH_CCB
|
|
: BT_INITIATOR_CCB);
|
|
}
|
|
ccb->target = xs->sc_link->target;
|
|
ccb->data_out = 0;
|
|
ccb->data_in = 0;
|
|
ccb->lun = xs->sc_link->lun;
|
|
ccb->scsi_cmd_length = xs->cmdlen;
|
|
ccb->sense_ptr = KVTOPHYS(&(ccb->scsi_sense));
|
|
ccb->req_sense_length = sizeof(ccb->scsi_sense);
|
|
|
|
if ((xs->datalen) && (!(flags & SCSI_RESET))) { /* can use S/G only if not zero length */
|
|
ccb->data_addr = KVTOPHYS(ccb->scat_gath);
|
|
sg = ccb->scat_gath;
|
|
seg = 0;
|
|
#ifdef TFS
|
|
if (flags & SCSI_DATA_UIO) {
|
|
struct iovec *iovp;
|
|
|
|
iovp = ((struct uio *) xs->data)->uio_iov;
|
|
datalen = ((struct uio *) xs->data)->uio_iovcnt;
|
|
xs->datalen = 0;
|
|
while ((datalen) && (seg < BT_NSEG)) {
|
|
sg->seg_addr = (physaddr) iovp->iov_base;
|
|
xs->datalen += sg->seg_len = iovp->iov_len;
|
|
SC_DEBUGN(xs->sc_link, SDEV_DB4, ("(0x%x@0x%x)"
|
|
,iovp->iov_len, iovp->iov_base));
|
|
sg++;
|
|
iovp++;
|
|
seg++;
|
|
datalen--;
|
|
}
|
|
} else
|
|
#endif /* TFS */
|
|
{
|
|
/*
|
|
* Set up the scatter gather block
|
|
*/
|
|
|
|
SC_DEBUG(xs->sc_link, SDEV_DB4,
|
|
("%ld @%p:- ", xs->datalen, xs->data));
|
|
datalen = xs->datalen;
|
|
thiskv = (int) xs->data;
|
|
thisphys = KVTOPHYS(thiskv);
|
|
|
|
while ((datalen) && (seg < BT_NSEG)) {
|
|
bytes_this_seg = 0;
|
|
|
|
/* put in the base address */
|
|
sg->seg_addr = thisphys;
|
|
|
|
SC_DEBUGN(xs->sc_link, SDEV_DB4,
|
|
("0x%lx", thisphys));
|
|
|
|
/* do it at least once */
|
|
nextphys = thisphys;
|
|
while ((datalen) && (thisphys == nextphys))
|
|
/*
|
|
* This page is contiguous (physically) with
|
|
* the the last, just extend the length
|
|
*/
|
|
{
|
|
/* how far to the end of the page */
|
|
nextphys = (thisphys & (~(PAGESIZ - 1)))
|
|
+ PAGESIZ;
|
|
bytes_this_page = nextphys - thisphys;
|
|
/**** or the data ****/
|
|
bytes_this_page = min(bytes_this_page
|
|
,datalen);
|
|
bytes_this_seg += bytes_this_page;
|
|
datalen -= bytes_this_page;
|
|
|
|
/* get more ready for the next page */
|
|
thiskv = (thiskv & (~(PAGESIZ - 1)))
|
|
+ PAGESIZ;
|
|
if (datalen)
|
|
thisphys = KVTOPHYS(thiskv);
|
|
}
|
|
/*
|
|
* next page isn't contiguous, finish the seg
|
|
*/
|
|
SC_DEBUGN(xs->sc_link, SDEV_DB4,
|
|
("(0x%x)", bytes_this_seg));
|
|
sg->seg_len = bytes_this_seg;
|
|
sg++;
|
|
seg++;
|
|
}
|
|
}
|
|
/* end of iov/kv decision */
|
|
ccb->data_length = seg * sizeof(struct bt_scat_gath);
|
|
SC_DEBUGN(xs->sc_link, SDEV_DB4, ("\n"));
|
|
if (datalen) {
|
|
/*
|
|
* there's still data, must have run out of segs!
|
|
*/
|
|
printf("bt%d: bt_scsi_cmd, more than %d DMA segs\n",
|
|
bt->unit, BT_NSEG);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
bt_free_ccb(bt, ccb, flags);
|
|
return (HAD_ERROR);
|
|
}
|
|
} else { /* No data xfer, use non S/G values */
|
|
ccb->data_addr = (physaddr) 0;
|
|
ccb->data_length = 0;
|
|
}
|
|
ccb->link_id = 0;
|
|
ccb->link_addr = (physaddr) 0;
|
|
/*
|
|
* Put the scsi command in the ccb and start it
|
|
*/
|
|
if (!(flags & SCSI_RESET)) {
|
|
bcopy(xs->cmd, ccb->scsi_cmd, ccb->scsi_cmd_length);
|
|
}
|
|
if (bt_send_mbo(bt, flags, BT_MBO_START, ccb) == (BT_MBO *) 0) {
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
bt_free_ccb(bt, ccb, flags);
|
|
return (TRY_AGAIN_LATER);
|
|
}
|
|
/*
|
|
* Usually return SUCCESSFULLY QUEUED
|
|
*/
|
|
SC_DEBUG(xs->sc_link, SDEV_DB3, ("cmd_sent\n"));
|
|
if (!(flags & SCSI_NOMASK)) {
|
|
timeout(bt_timeout, (caddr_t)ccb, (xs->timeout * hz) / 1000);
|
|
return (SUCCESSFULLY_QUEUED);
|
|
}
|
|
/*
|
|
* If we can't use interrupts, poll on completion
|
|
*/
|
|
return (bt_poll(bt, xs, ccb));
|
|
}
|
|
|
|
/*
|
|
* Poll a particular unit, looking for a particular xs
|
|
*/
|
|
static int
|
|
bt_poll(bt, xs, ccb)
|
|
struct bt_data* bt;
|
|
struct scsi_xfer *xs;
|
|
struct bt_ccb *ccb;
|
|
{
|
|
int count = xs->timeout;
|
|
u_char stat;
|
|
|
|
/* timeouts are in msec, so we loop in 1000 usec cycles */
|
|
while (count) {
|
|
/*
|
|
* If we had interrupts enabled, would we
|
|
* have got an interrupt?
|
|
*/
|
|
stat = inb(BT_INTR_PORT);
|
|
if (stat & BT_ANY_INTR) {
|
|
bt_intr((void *)bt);
|
|
}
|
|
if (xs->flags & ITSDONE) {
|
|
break;
|
|
}
|
|
DELAY(1000); /* only happens in boot so ok */
|
|
count--;
|
|
}
|
|
if (count == 0) {
|
|
/*
|
|
* We timed out, so call the timeout handler manually,
|
|
* accounting for the fact that the clock is not running yet
|
|
* by taking out the clock queue entry it makes.
|
|
*/
|
|
bt_timeout(ccb);
|
|
|
|
/*
|
|
* because we are polling, take out the timeout entry
|
|
* bt_timeout made
|
|
*/
|
|
untimeout(bt_timeout, (caddr_t)ccb);
|
|
count = 2000;
|
|
while (count) {
|
|
/*
|
|
* Once again, wait for the int bit
|
|
*/
|
|
stat = inb(BT_INTR_PORT);
|
|
if (stat & BT_ANY_INTR) {
|
|
bt_intr((void *)bt);
|
|
}
|
|
if (xs->flags & ITSDONE) {
|
|
break;
|
|
}
|
|
DELAY(1000); /* only happens in boot so ok */
|
|
count--;
|
|
}
|
|
if (count == 0) {
|
|
/*
|
|
* We timed out again... This is bad. Notice that
|
|
* this time there is no clock queue entry to remove.
|
|
*/
|
|
bt_timeout(ccb);
|
|
}
|
|
}
|
|
if (xs->error)
|
|
return (HAD_ERROR);
|
|
return (COMPLETE);
|
|
}
|
|
|
|
static void
|
|
bt_timeout(void *arg1)
|
|
{
|
|
struct bt_ccb * ccb = (struct bt_ccb *)arg1;
|
|
int unit;
|
|
struct bt_data *bt;
|
|
int s = splbio();
|
|
|
|
/*
|
|
* A timeout routine in kernel DONOT unlink
|
|
* Entry chains when time outed....So infinity Loop..
|
|
* 94/04/20 amurai@spec.co.jp
|
|
*/
|
|
untimeout(bt_timeout, (caddr_t)ccb);
|
|
|
|
unit = ccb->xfer->sc_link->adapter_unit;
|
|
bt = btdata[unit];
|
|
|
|
#ifdef UTEST
|
|
bt_print_active_ccbs(bt);
|
|
#endif
|
|
|
|
/*
|
|
* If the ccb's mbx is not free, then the board has gone Far East?
|
|
*/
|
|
if (bt_ccb_phys_kv(bt, ccb->mbx->ccb_addr) == ccb &&
|
|
ccb->mbx->cmd != BT_MBO_FREE) {
|
|
printf("bt%d: not taking commands!\n", unit);
|
|
Debugger("bt742a");
|
|
}
|
|
/*
|
|
* If it has been through before, then
|
|
* a previous abort has failed, don't
|
|
* try abort again
|
|
*/
|
|
if (ccb->flags == CCB_ABORTED) {
|
|
/*
|
|
* abort timed out
|
|
*/
|
|
printf("bt%d: Abort Operation has timed out\n", unit);
|
|
ccb->xfer->retries = 0; /* I MEAN IT ! */
|
|
ccb->host_stat = BT_ABORTED;
|
|
bt_done(bt, ccb);
|
|
} else {
|
|
/* abort the operation that has timed out */
|
|
printf("bt%d: Try to abort\n", unit);
|
|
bt_send_mbo(bt, ~SCSI_NOMASK, BT_MBO_ABORT, ccb);
|
|
/* 2 secs for the abort */
|
|
ccb->flags = CCB_ABORTED;
|
|
timeout(bt_timeout, (caddr_t)ccb, 2 * hz);
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
#ifdef UTEST
|
|
static void
|
|
bt_print_ccb(ccb)
|
|
struct bt_ccb *ccb;
|
|
{
|
|
printf("ccb:%x op:%x cmdlen:%d senlen:%d\n"
|
|
,ccb
|
|
,ccb->opcode
|
|
,ccb->scsi_cmd_length
|
|
,ccb->req_sense_length);
|
|
printf(" datlen:%d hstat:%x tstat:%x flags:%x\n"
|
|
,ccb->data_length
|
|
,ccb->host_stat
|
|
,ccb->target_stat
|
|
,ccb->flags);
|
|
}
|
|
|
|
static void
|
|
bt_print_active_ccbs(bt)
|
|
struct bt_data *bt;
|
|
{
|
|
struct bt_ccb *ccb;
|
|
int i = 0;
|
|
|
|
while (i < CCB_HASH_SIZE) {
|
|
ccb = bt->ccbhash[i];
|
|
while (ccb) {
|
|
if (ccb->flags != CCB_FREE)
|
|
bt_print_ccb(ccb);
|
|
ccb = ccb->nexthash;
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
#endif /*UTEST */
|